Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138

Details Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138 Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.confq..29s&link_type=abstract

10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io

Astronomy and Astrophysics

Astronomy

Scientific paper

As it is well known many lines in the spectra of hot emission stars (Be and Oe) present peculiar and very complex profiles. As a result, we cannot find a classical theoretical distribution in order to fit these profiles. Because of this, we are not able to calculate the physical parameters of the regions were these lines are created. In this paper, using the Gauss-Rotation model (GR-model Danezis et al), that proposed the idea that these complex profiles consist of a number of independent Discrete or Satellite Absorption Components (DACs, SACs), we study the UV Si IV (λλ 1393.755, 1402.77 A) resonance lines of the Be star HD 50138 in three different periods. From this analysis we can calculate the values of a group of physical parameters. The parameters are the apparent rotational and radial velocities, the random velocities of the thermal motions of the ions, as well as the Full Width at Half Maximum (FWHM) an the absorbed energy of the independent regions of matter which produce the main and the satellite components of the studied spectral line. Finally we calculate the time scale variations of the above physical parameters.

Affiliated with

Also associated with

No associations

Rating

Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time scale variations of the physical parameters of the Si IV resonance lines in the case of the Be star HD 50138 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-911130